Her sister Julie Lettington, 43, of Gertrude Road, Norwich, also admitted stealing perfume box sets, worth up to £330, from branches of Lloyds Pharmacy in Aylsham and Sheringham, at Norwich Magistrates’ Court yesterday. The court heard how both sisters were drug addicts.

In mitigation, Gavin Cowe said: “Both ladies entered guilty pleas at the first time of asking. The thefts were simple and straightforward in terms of their mechanics. Both have made full and frank admissions and both have problems with addiction.”

Platten had stolen televisions from Sainsbury’s, totalling £679.95, on four separate occasions between October 3 and October 8 last year, the court heard.

She also stole five Xbox games, worth £65.97, from Sainsbury’s on October 8, a £99.98 Hitachi drill from B&Q on October 18 and goods from Pets at Home on October 24. Platten was also convicted of some driving offences for which there was no separate penalty.

Both sisters will appear at Norwich Crown Court for sentencing on a date to be fixed.

District judge Philip Browning said: “You have pleaded guilty to serious offences which have cause a lot of loss to commercial premises.”